The highly anticipated Broadway revival of The Music Man has announced an open casting call for the role of Winthrop Paroo, leading lady Marian's shy younger brother whose excitement in joining Harold Hill's band moves his older sister. Telsey + Company, who will hold the audition, asks that boys from 7-10 years old and under 4'6" apply. Auditions for the role will be held on February 16 from 12:00pm-2…